feature: add autobrr widget

[brandon-barker]

Adds widget support for autobrr

service.yaml example:

    - autobrr:
        icon: autobrr.png
        container: autobrr
        href: http://<url>:<port>
        description: the modern autodl-irssi replacement
        widget:
          type: autobrr
          url: http://<url>:<port>
          key: <api_key>

Preview:

[zze0s]

That's cool! There's health check/ping endpoints on:
/api/healthz/liveness - pings ok if it's up
/api/healthz/readiness - pings ok if the services internally are fine like db

[shamoon]

This works great, thanks for the PR!

[github-actions]

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